I'd want to be standing outside the error bounds, plus 5 miles.
I think that it's important we know these systems work. There's some freaking amazing technology built into them back when I was a kid. If even 50% of them actually work, we're way ahead of everyone else.
I'd be surprised if anything in Russia works at a rate of more than 1%.
Throwing stuff up into space looks great but so would a bolt of thunder from out of the blue where the missile hit the target.
If we don't see it land, it's not a demonstration.